Pole Barns for RV Storage: Size & Design Considerations
Your RV's been sitting in the driveway with the sun beating down on the roof all summer and snow piling up on it all winter. This means every spring you're on a ladder checking seals you'd rather not have to worry about. Or maybe you're paying a storage lot every month for the privilege of driving across town to get to your own camper.
Both of these scenarios are incredibly inconvenient, and a pole barn for RV storage solves both at once. But the difference between a building that works and one that becomes a daily headache comes down to a handful of numbers you have to get right before anybody breaks ground.
At Hilltop Post Buildings, we've been designing custom post-frame buildings across Central Ohio since 2012, including garages and multi-purpose buildings with tall doors and wide-open bays. Sizing one for an RV isn't complicated, but it is unforgiving. There's no easy fix for a door that's six inches too short.
So let's look at the numbers that really count.
TL;DR - Pole Barns for RV Storage
No time to read? Here's a quick summary:
- Measure your RV yourself. Measure height with the rooftop air conditioner, length with the ladder and hitch, and width with the mirrors out.
- Door height makes or breaks the project, and your sidewall has to be taller than the door to leave room for the header and track.
- Size the footprint around your RV's length plus room to walk and store gear, and think just as hard about the route you'll drive to get in the door.
Start With Your RV's Measurements
Before you think about the building at all, you need real measurements of the rig going into it. Some manufacturers include the rooftop air conditioner in their published height, and some don't, and nothing you added after you bought it is in that number at all. So grab a tape measure and write down:
- Height with everything on top. Rooftop air conditioners, satellite domes, antennas, and solar racks all add inches. Many Class A motorhomes land between 12 and 13.5 feet tall once the AC unit is counted, but measure yours.
- Length including the extras. Rear ladder, spare tire carrier, bike rack, and hitch can all add to the advertised length, depending on how the manufacturer measures it.
- Width with the mirrors out. Slide-outs matter for clearance once you're parked, but mirrors are what you're threading through the doorway.
Then add one more item to the list: the RV you might own later. People upgrade, and adding height to a finished building is not a small job.
How Tall the Door (and the Walls) Need to Be
Door height is where most RV storage projects live or die, and it's the dimension people underestimate most often.
A common rule of thumb is 14 feet of door height for a Class A motorhome or a fifth wheel, with 16 feet giving you breathing room for a taller rig or a future upgrade. For width, 12 to 14 feet is typical. You want margin for the mirrors, and for how hard it is to back it in perfectly on the first try.
An overhead door needs room above the opening for the header and track hardware, which means the walls have to be meaningfully taller than the door itself. How much taller depends on the door and track configuration, so ask your builder to spell it out rather than assuming. When two proposals show different sidewall heights, this is often why.
Sizing the Building Around Your Rig
Once the door is settled, the footprint is mostly a question of how you want to use the space around the RV.
A reasonable starting point is your RV's length plus roughly 10 to 15 feet. That gives you room to walk around it, work on it, and store the gear that comes with it: hoses, leveling blocks, and the tote of odds and ends that never quite fits inside.
Width is a bigger decision than it looks. Plenty of folks who start out wanting one RV bay end up wishing they had a shop bay beside it, and adding that width during the original build costs far less than adding it later. Our post on pole barn sizes is a good place to think it through.
And don't plan the building without planning the approach. A perfectly sized barn you can't back into is a problem. Walk the route and look at:
- Your turning radius coming off the driveway
- Tree limbs and utility lines along the path
- Which way the door faces, and whether you'll be backing in blind
The Slab Deserves More Thought Than It Usually Gets
A loaded motorhome puts a lot more weight on a lot less floor than a pickup does, and the slab should reflect that.
A large Class A can weigh well over 20,000 pounds, and most of that lands on a handful of tires. Thickness, reinforcement, and joint placement all matter more here than for a standard garage floor. So does what's underneath, since proper grading and compacted stone are what keep a slab from cracking after a couple of Ohio winters. Pour an apron at the door too, or your front tires will carve a rut in the yard every time you come and go.
This is one reason we'd rather handle the complete project than just drop off a shell. We coordinate the grading, the compacted stone, and the concrete along with the building, so you're not standing in your own driveway listening to two contractors explain that the slab is the other guy's problem.
Design Details That Protect the RV
Getting the RV under a roof is only half the job. These details keep it in good shape once it's in there.
Ventilation. Moisture is the real enemy of a stored RV. On an uninsulated metal roof, warm humid air meeting cold steel condenses on the underside and drips onto whatever is parked below. Vented soffits let cool air in at the eaves, and a ridge vent lets humid air out at the peak.
Insulation. Worth it if you'll work on the RV in cold weather or want the space usable year-round, but less critical if you're just parking. Our guide to pole barn insulation options walks through the choices.
Electrical. Plan for a 30-amp or 50-amp shore power connection to keep batteries maintained while the RV sits. Overhead lighting and well-placed outlets make more difference than people expect.
Nice to have. A spigot for washing, a lean-to for the boat, and a loft for seasonal gear are far easier to include now than later.
A Few Ohio Realities
Building here comes with a few local factors worth planning around.
Snow load matters on a wide-span roof and is part of how your trusses get specified. Metal roofing sheds snow well and handles the freeze-thaw cycles that wear on other materials. Permits and setbacks vary by county and township, so what's routine in one place takes longer in another.
Materials matter even more when a building is protecting something valuable. We use 26-gauge steel where most builders use 29-gauge, and we use premium treated posts rated to last 50 years in ground contact. Post protection systems that wrap and seal the posts at the ground line are available as an upgrade, and worth asking about when we put your proposal together.
Getting Your RV Under Roof
It's the first hard freeze in November. Your RV is inside with the door closed, the tires are out of the mud, and the batteries are on a maintainer. You're not fretting about a tarp blowing off or a storage lot invoice that keeps adding up. It's the freedom of owning your own RV storage, like the freedom of the open roads your RV promised you.
Here's how to get there:
- Measure your RV. Measure height with the air conditioner, length with the ladder and hitch, and width with the mirrors.
- Decide what else goes in the building. A shop bay, a second vehicle, storage. Put it in the plan now, not next year.
- Walk your site. Look at the approach, the drainage, and which way the door should face.
- Give us a call. We'll put together a proposal with sizes, materials, and pricing, and we'll be straight with you about what will and won't work on your property.
Contact us to request a free quote. We'll take it from bare ground to finished building, so you can get back to enjoying your RV instead of worrying about where to park it.
